You can now upgrade a retro Casio watch with Bluetooth, step tracking, and games
via olleewatch.com
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The Ollee Watch One makes several Casio digital watches smarter. | Image: Ollee Watch For the first time since it launched 36 years ago, the iconic Casio F-91W digital watch is getting some smart upgrades — but not from Casio. The Ollee Watch One is a replacement mainboard for the Casio F-91W, A158W, and several […]